Golang亿级高并发实例（代码可直接使用）

Posted 2021-02-03

可以直接拿去当成一个库来用

举例

package main
import "your/path/to/.../Concurrence"

//定义一个实现Job接口的数据
type Score struct {
    Num int
}
//定义对数据的处理
func (s *Score) Do() {
    fmt.Println("num:", s.Num)
    time.Sleep(1 * 1 * time.Second)
}

func main() {
    num := 100 * 100 * 20
    // debug.SetMaxThreads(num + 1000) //设置最大线程数
    // 注册工作池，传入任务
    // 参数1 worker并发个数
    p := NewWorkerPool(num)
    p.Run()

    //写入一亿条数据
    datanum := 100 * 100 * 100 * 100
    go func() {
        for i := 1; i <= datanum; i++ {
            sc := &Score{Num: i}
            p.JobQueue <- sc //数据传进去会被自动执行Do()方法，具体对数据的处理自己在Do()方法中定义
        }
    }()

//循环打印输出当前进程的Goroutine 个数
    for {
        fmt.Println("runtime.NumGoroutine() :", runtime.NumGoroutine())
        time.Sleep(2 * time.Second)
    }

}

Concurrence.go

package Concurrence

import "fmt"

// --------------------------- Job ---------------------
type Job interface {
    Do()
}

// --------------------------- Worker ---------------------
type Worker struct {
    JobQueue chan Job
}

func NewWorker() Worker {
    return Worker{JobQueue: make(chan Job)}
}
func (w Worker) Run(wq chan chan Job) {
    go func() {
        for {
            wq <- w.JobQueue
            select {
            case job := <-w.JobQueue:
                job.Do()
            }
        }
    }()
}

// --------------------------- WorkerPool ---------------------
type WorkerPool struct {
    workerlen   int
    JobQueue    chan Job
    WorkerQueue chan chan Job
}

func NewWorkerPool(workerlen int) *WorkerPool {
    return &WorkerPool{
        workerlen:   workerlen,
        JobQueue:    make(chan Job),
        WorkerQueue: make(chan chan Job, workerlen),
    }
}
func (wp *WorkerPool) Run() {
    fmt.Println("初始化worker")
    //初始化worker
    for i := 0; i < wp.workerlen; i++ {
        worker := NewWorker()
        worker.Run(wp.WorkerQueue)
    }
    // 循环获取可用的worker,往worker中写job
    go func() {
        for {
            select {
            case job := <-wp.JobQueue:
                worker := <-wp.WorkerQueue
                worker <- job
            }
        }
    }()
}

// --------------- 使用 --------------------
/*
type Score struct {
    Num int
}

func (s *Score) Do() {
    fmt.Println("num:", s.Num)
    time.Sleep(1 * 1 * time.Second)
}

func main() {
    num := 100 * 100 * 20
    // debug.SetMaxThreads(num + 1000) //设置最大线程数
    // 注册工作池，传入任务
    // 参数1 worker并发个数
    p := NewWorkerPool(num)
    p.Run()
    datanum := 100 * 100 * 100 * 100
    go func() {
        for i := 1; i <= datanum; i++ {
            sc := &Score{Num: i}
            p.JobQueue <- sc
        }
    }()

    for {
        fmt.Println("runtime.NumGoroutine() :", runtime.NumGoroutine())
        time.Sleep(2 * time.Second)
    }

}
*/